Signor of two-thirds to albert meyenberg and siegmtjnd



(No Model.)

M. WEND ORP. INOANDBSGBNT LAMP.

Patented Nov. 2, 1 897.

Filj

fl-4: mums PETERS co. PHOTO-LITNO., WASHXNGTON. lay a.

NrTE-D STATES ATENT Fries.

MAXIMILIAN wnNDoRF, OF FRANKFORT-ON-TI-IE-MAIN, GERMANY, A s- SIGNOR orTWO-THIRDS TO ALBERT MEYENBERG AND SIEGMUND HENLEIN, OF SAME PLACE.

INCAN D ESCENT- LAM P.

SPECIFICATION forming part of Letters were No. 592,851, dated November2, i897.

' Application filed December 28,1895. Serial No. 573,121. (No model.)

To aZZ whom it may concern.-

Be it known that I, MAXIMI'LIAN \VENDORF, mechanic, ofFrankfort-on-the-Main,Prussia, Germany, have invented new and usefulImprovements in Incandescent Lamps, of which the following is aspecification. 4

The object of my invention is to provid an oil-lamp by which a flame canbe produced capable of making an incandescent body glow as the Welsbachincandescent gas-light does; and said invention consists in the novelarrangement and combination of parts hereinafter described and claimed.For this purpose it is necessary to vaporize thoroughly the oil,petroleum, hydrocarbons, alcohol, or the like, and to mix itwith air inorder to get a hot non-sooting flame of about blue color when coal-oilis used. By my invention the heat necessary for this evaporation isyielded at the beginning of the operation by another flame to heat theevaporator. For this purpose there are means provided to vaporizebenzin, gasolene, alcohol,or the like by acurrent of air blown throughthe liquid.

Further, my invention consists in the various means for generating thetwo flames above mentioned and in the details of constructionhereinafter shown and claimed.

In order that my invention may be better. understood, Imake reference tothe annexed drawings, showing an embodiment of my invention, whereinFigure l is a vertical section through the lamp. Fig. 2 is a side viewof a part of it. Figs. 3, 42, and 5 are detail sectional viewsof thecock on an enlarged scale.

O is the hollow perforated base of the lamp; A, the oil-tank; B, thebenzin-tank, located in the interior of the oil-tank.

H is a rubber ball placed inside the lampbase and communicating with thetankB by a pipe h. This pipe communicates with a branch pipe h, having anon-return valve h and being adapted to be connected with a rubber ballH, which is used as an air-pump.

The pipe h terminates inside another larger pipe I), closed at the upperend bythe wall or partition 17 The tank B is filled with cotton-battingand provided with a perforated wall or partom ofv the tank A throughsaid pipe.

tition B. The tank B is fed with benzin by apipe b, extending from thebottom of the tank B to the mouthpiece K. This serves also for the inletof the oil to the tank A and isclosed by a cover L. This coverisprovided with a conical valve or stopper Z, which fits into theorifice of the pipe Z) and prevents the oil from overflowing if the lampis inclined, but allows of a communication of compressed air between thetank B and tank A. The continuation I)? of the pipe I) communicates withthe space above the partition .B by means of perforations m and alsowith the benzin-pipe a.

I The pipe at is filled with a wick, cotton, or the like, 'to filter theoil rising from the bot- The casing M and the plug M of the cock havetwo, ports corresponding to the pipes at and a and leading to the pipesm m, respectively. The ports f and f are so arranged in the plug M thatwhen the port f is turned to almost shut off communication between thepipes at and m the port f will be opened to establish communicationbetween pipes aand m. There are narrow grooves g g on the plug adjoiningthe openings of the port f, which allow a more delicate regulation thanthe wide orifice forming the port itself does. There is a scale N, whichindicates whether the benzin-conduit alone is open: first, when bothconduits are open simultaneously; second, when the oilconduit alone isopen, and, third, when both conduits are closed, (0,) and thus theindications on the scale allow the regulation of the oil-flow.

On the tank A are standards D, supporting the vaulted plate G andsurrounded by the cylinder Gr, of sheet metal. The plate G is fixed to atube P, which supports the burner. The burner consists of the bracket E,into which the glass chimney F fits, and of the evaporator R, which isfed with oil from below by the pipe m and which dischargesthe evaporatedoil downward by a pipe p with a nozzle p.

The evaporator is placed in the enlarged head P of-the tube P by threearms 0", which rest on the upper edge of a perforated cone t.

Under the cone t is an annular space T for distributing thebenzin-vapors entering by' the pipe m.

Q is a cap with apertures q placed on the lower end of the pipe P foradmitting air to the vapors discharged by the nozzle 1) and receivessuch small quantities of condensed oil as may drop.

a is a wire net of conical shape.

8 is a pin 011 which the incandescent m antle S is hung.

The lower part of the glass cylinder F is made conoidal, according tothe customary shape of the mantle, whereas the upper part iscylindrical, as usual.

The operation and working of the new lamp are as follows: If the lamp isto be lighted, the handNis set on number l of the scale I and therebythe port f opens communication between the pipes to m. Then by pressingthe ball II the ball H is inflated and air driven through the pipes 7Land l) and through the benzin in the tank 13. Benzin-vapors mixed withair pass through the pipes a and m into the annular chamber T andthrough the perforated cone t to the wire net 1!. If a match is held tothe top of the cylinder F, the vapors are ignited and an annular flamegenerated above the net-wire u. If this flame has burned a quarter orhalf a minute, the evaporator is sufficiently heated, the hand N isturned to number 2, which establishes communication between the pipes tom, whereas communication between the pipes a m is almost closed. The oilunder the pressure of the air enters the evaporator R, the under part ofwhich is below the flame. The evaporator R is made of such size and thewalls are sufficiently thin that it receives a sufficient amount of heatby the flame over a to vaporize completely all the delivered oil. Thevapors are conveyed from the upper end of the evaporator by the pipe 1),which runs downward and ends in an upward-turned nozzle 1). Here thevapors are discharged and mixed with air and delivered at the wire netto. Here they are ignited by the benzin-flame. Now the hand N isturnedon to number 3 or some other place near it to which the lamp isregulated, whereby the benzin-inlet is cut off and the oil-inlet isopened to the right extent. If necessary, the ball 11 is worked now alittle more to fill perfectly the ball II, the contents of which aresuflicient to run the lamp for many hours, whereas the operation of thebenzin-flame necessitates a comparatively great amount of air.

The shape of the lower part of the chimney F assists in preventing anyobnoxious odor and provides a regular ignition of the products ofcombustion throughout the entire extent of the stocking, whereas theother devices have for their object the generation of a hot, blue,steady, and non-sooting flame. If the flame is to be extinguished, thehand is turned to l. Thereby the oil is cut off and the benzin-flamelighted for the purpose of preventing anysoot being had by the slowextinguishing of the oil-flame and to heat the evaporator R to .theevaporation of the last particle of oil remaining in it.

The object of my invention is not'restricted to the forms andinstrumentalities above described; but 7 Vhat I claim, and desire tosecure by Letters Patent, is the following:

1. In an incandescent lamp the combination with a burner-head, of anevaporator contained therein,of a vapor-pipe communicating with theevaporator and having its dischargeopening under the burner-head, and aseparate conduit connected with said burnerhead and having adischarge-openin g under the bu rner-head thereby providing an auxiliaryburner for heating the evaporator, substantially as described.

2. In an incandescent lamp, the combination with two tanks for a burningand an igniting fluid, of pipes leading to the burnerhead, and means toshut or open both pipes or either of them, substantially as described.

3. In an incandescent lamp, the combination of two tanks for a burningand an igniting fluid, of pipes leading from them to the burner-head,and of means to open the ignitin g-pipe, open the lighting-pipe andclose the igniting-pipe consecutively by one handle, substantially asdescribed.

4. In an incandescent lamp, the combination with two tanks for theburning and the igniting fluid, of means to set both tanks underatmospheric pressure, and of means to store up the compressed air anddelivering it, substantially as described.

5, In an incandescent lamp, the eon1bination with a burner-head andmeans for feeding the same, of auxiliary means for feeding, from a tankindependent of the main tank or reservoir, an easily-evaporating fluid,as benzin or alcohol, means for forcing air through the fluid in saidindependent tank to the burner-head, substantially as described.

6. In an incandescent lamp, the combination of a burner-head, of anigniting device consisting of a tank independent of the main tank orreservoir containing cotton or the like, and an easily-evaporable fluid,an air-pump communicating with said independent tank, an air-pipeopening at the bottom. of the tank, andadischarge-pipe at the cover ofthe tank, substantially as described.

7. In an incandescent lamp, the combination with a hollow burner of twobasins or tanks for a burning and an igniting fluid,- of means to setboth tanks under pressure, of pipes extending from the said tanks andcommunieating with the inner space of the burner, and of means to openor close the said pipes together or alternatively substantially asdescribed.

8. In an incandescent lamp, the combination with an oil-tank, of abcnzin-tank, of pipes extending from the tanks to the burner, of arubber ball, a pipe extending from the rubber ball and comm unicat-ingwith the said tanks, means to fill the said ball with compressed air,and means to open or close the said tank-pipes, substantially asdescribed.

9. A burner for an incandescent lamp consisting of an open pipe endingin an enlarged perforated burner-head, an evaporator placed at the topof the burner and heated thereby, a pipe leading to the evaporator, asecond pipe leading from the top of the evaporator downward and ending,in an upward-turned nozzle, a pipe for the supply of the igniting agent,and means to discharge the igniting agent Within said burner-head,substantially as described.

10. In an incandescent lamp the combination with an oil-tankof abenzin-tank, a hollow foot, a rubber ball placed inside the hollow foot,means to inflate the ball, communi cating passages between the ball andthe said tanks, a double-passage cock at the top of the oil-tank, aburner supported b y the saidtank, pipes connecting the cock with thetanks and the burner, and a scale for indicating the position of thecock, substantially as described.

11. In an incandescent lamp the combination with an oil-tank and abenzin-tank, of a mouthpiece in the oil-tank, a filling-pipe of thebenzin-tank extending into the said mouthpiece, and means to close themouthpiece substantially as described.

12. In an incandescent lamp the combination with a burner-head, of anoil-tank, a pipe opening near the bottom of said tank and communicatingwith the burner-head, filteringfilling in the pipe, an independent pipealso communicating with the burner-head and a single cock controllingthe communication of said pipes with the burner-head, substantially asdescribed. v 13. In an incandescent lamp the combination with anoil-tank of a benzin-tank placed in it, a cotton filling in thebenzin-tank, a false perforated plate under the cover of the lattertank, a pipe extending from the top of the tank to the burner, a pipecommunicating with a compression air-reservoir and extending upward inthe benzin-tank, a larger pipe closed at the top and open at the bottomand surrounding the said pipe, and a pipe eX-' tending from thebenzin-tank into the oiltank and opening near the top of it,substantially as described.

14. In an oil-lamp, the combination of an eXpansible reservoir, meansauxiliary thereof for supplying pressure thereto, an oil-tank andbenzin-tank in communication with said expansible reservoir, a burnerconnected by suitable pipes to said oil and benzin tank and means toregulate the fiow of igniting and burning fluid to said burner. 15. Inan oil-lamp, the combination of a single burner-head and means forsupplying the said burner-head, first with an igniting fluid from onetank and then with a burning fluid from a second tank.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

MAXIMILIAN VVENDORF.

Witnesses:

SIEGMUND HENLEIN, RICHARD WIRTA.

